Handwheel for looms



April 23, 1946. J P mc 2,398,853

HAND WHEEL FOR LOOMS Filed Aug. 25, 1944 [72 mini 07 Joseph M. pafim'ck,

Patented Apr. 23, 1946 unirso STATES} PATENT oFFics This inventionrelates toimprovements in handy wheels for looms and it-is thegeneral-object of the invention; to. provide a simple hand wheel whichcan be readily assembled on a loom shaft and held tightly in position. Aloom. is occasionally stopped by one or. another ofits stop motions;suchas the weftor warp stop motion,- or the. protector mechanism, inwhich" event it. is: usually desirable to: turn the loomv backwardly bymanual means. Hand wheels for this general purpose have been utilizedheretofore, but. they have. generally been expensive.- to make and-.of.such weight-thattheir momentum of-.rotation increases the difiiculty ofstopping the loom. It.- is an important object of mypresentinventiontoprovide a light weight handwheel amplystrongtowithstand the strainsincident to manualturning of. the loom but at the same time light enoughso that it adds very little to the force which must be overcomewhen theloom is stopped.

It is a furthenobject of my-present invention to providea hand wheelformed of a thin sheet metal web the. outer: part of which is secured toahand rimor ring and the inner part of which is provided w-ithhclampingmeans near the center of rotation. Theclampingvmeans may include holdingand checking collars between which the web istightly clamped.

It is another object of my present invention to provide a hand wheelhaving; a hubmadeof two parts one of. which has the aforesaid. webvmounted thereonand the. other part of. which may be threaded to. thefirst part or. secured thereto in other suitable manner. After thetwo.

parts of. the. hub have been secured together in clamping relation with.respect to the web they are slotted for thereception of a key. Whenassembld onthe shaft-the key. serves to prevent relative angularmovement of 'the two parts. of'

relative movementoffthe twohub-forming parts may occur. By reason of.the aforesaidkey slot, however, it. willbe. necessary to return the twoparts of the hub to: theiioriginal clamping'posiventionzreside'siin theco'inbination and; arrangement of parts hereinafter described a'nd'isetforth.

. In the:accompaiiying;drawing,v wherein a convenientiembodiment-of my;invention" is set forth.

Fig; 1 isza front elevation of my: improved hand i wheel: together with'the' shaft on which it is mountedand the-adjacent part ofi a loomframe, Fig. 2 is a side elevationtlookin'g-intHedirectionof arrow 2,Fig;

10. Figa 3; is a side elevationf; the wheel web r and ringwith vthehubparts amieshaftremoved Fig; 4 is an' enlarged: fragmentary viewshowing. thenmanner in which the-web'is secured to the-ring,

Fig? 5 isa=group viewin which-the threeparts of the"- hand wheel areshowrrdetached:- preparateryto assembly,

Fig 6'-i san enlarged-vertical section online 66.\ of Fig. 2, the shaft.being ind-icatedlin dot and 2a dash llines so thatthe-'key.- slot maybe shown infulllinesr.

Fig'. 7 is-=a=vertical= transverse section on line |--'Lof Figs 6; and

Fig-. 8 isa plan view of the holding collar;

In E isa II have shown: a 100m frame I 0 and one-ref its shafts H, tthishaft-usually being the upper---0r. crank shaft of the loom. The framesupports a bearing. IZ-in which the shaftrotates and ifrom which-"itprojects laterally from the 30 loom -as at |3=- Thehandwheeldesignatedgenerally ate H is secured-tethe shaftat a point indicatedain EigA -andits inner wallis provided withslots l8, -one for each-ofwthe -arms Thelatter extend into their respective slots and may be-held. imposition asbyweldinglind-icated.l'at l9; s

The cen'tnofftlie web" Isis:provideafwitnanom circular. openiiig. 20"?which. hasarcuate sides 2i formed concentriciwith the a'xis of"theilwheel; and top, andb'ottom straight. edges 22 and 23 which .areprereremyr arener 'Any other 'suitable form 'of" noncircul'arf'openingli 20 ma be utilized, but

tion-before thewh'eel can be assembledon the shaft. I L

With these and other obJects In view which will appear as thedescription proceeds, my in- I'find the" form illustrated inFig. 3 tobe-convenient. V

The wheel is provided with two hub members one ofwhich is a holdingcollar 25 and the other positioned for engagement with the right surface-3| of the web |5 as view in Fig. 6. The projection 28 is generally of aform to fit snugly into the opening 20 of the web and has side screwthreads 32. The top and bottom of the projection 28 are slabbed,respectively, at 33 and 34 to fit the edges 22 and 23 of the opening 23.The projection 28 is thus formed with screw threads on its sides andflat surfaces on its top and bottom.

The checking collar or nut 26 is provided with a fiat web 40 and acircular flange 4| having internal screw threads 42 to fit the screwthreads 32 of the holding collar. The flange and web 40 form a cavity 43to receivethe projection 28. The checking member is provided with a bore45 extending through web 40 to receive the shaft I, and the screwthreads 32 and 42 are concentric with the axis of the hand wheel and oftheir respectiv' members 25 and26.

When assembling the hand wheel the holding collar 25 may be moved to theleft as viewed in Fig. 5 until the projection 28 has been insertedthrough the opening 20 with the shoulder 3|] in engagement with thesurface 3| of the Web l5.

The checking collar 26 is then moved to the right, Fig. 5, and threadedon the screw threads 32'until its surface 46 engages the left handsurface 41 of the web l5, as indicated in Fig. 6. The checking collar isthreaded tightly in position so that the web is clamped firmly betweenthe members 25 and 26. Up to this time in the process of making the handwheel the bores 21 and 45 have been smooth and continuous, but after thethree parts of the hand wheel, that is the web and. the two hub formingmembers, are assembled in tight relationship, a key slot is cut in thebores of both of the members 25 and26. In Fig. 6 that part of the keyslot which isin the holding collar 25 is indicated at 50, While thatpart of the key slot in the checking collar is shown at 5|. These twoslots are in alignment to receive a key 52, see Fig. 7, which is alsoreceived by a slot 53 in the shaft II. r

After the key slots 50 and 5| have been cut the hand wheel is ready forapplication to the shaft II, but it may be that some time willelapsebetween the manufacturing of the hand wheel and its application tothe shaft. -If during this time relative rotary motion'should take placebetween the members 25 and 26 in a direction to loosen their clampingrelationship with the web 15, the slots 50 and 5| will be outofre'gister with each other. If under these conditions an attempt ismade to apply the wheel to a shaft the inability of the key 52 to enterboth of the slots 50 and 5| will indicate to the workman that the twoparts 25 and 26 are not in their correct angular relationship and thelatter can thereupon be reestablished. The slots 50 and 5| will thenalign' and will receivethe key 52. This reestablishment of correctangular'relation of the hub forming parts to permit fitting of the keywill return them to tight clamping position relatively to the webperpendicular to'the axis of the shaft I5. The cavity 43 is deep enoughmeasured axially of the checking member 26 to prevent the projection 28from touching the web when the parts are in tight holding relationshipwith respect to the web I5.

The tubular rim or ring I1 is shown herein as a convenient means forproviding a light hand grip which will develop a minimum of momentumofrotation during running of the loom. So far as certain features of myinvention are concerned, however, I do not wish to be limited to theconstruction set forth for instance in Fig. 4. The web is provided withrecesses 60 which permit grasping of the rim IT for purposes of turningthe hand wheel manually.

From the foregoing it will be seen that I have provided a light weighthand wheel including a sheet metal web and hub forming members betweenwhich the web is clamped. The Web is provided with a non-circularopening which fits a projection of like cross section on the holdingcollar 25, and screw threads on the projection provide means by whichthe checking collar 26 may be turned tightly against the web l5. The webI5 is therefore seen to be held against rotation with respect to themember 25 and when the latter is keyed to the'shaft I the hand wheel andshaft turn together. Furthermore, it will be seen that the key 52 servesto prevent relative rotation of the parts 25 and '26 after they havebeen assembled on the shaft and assurance is thus given that the handwheel will be kept tightly clamped in correct position so that it willturn in a plane The two key slots 5|] and 5| must be in alignment beforethe key 52 can be fitted and this condition requires that the two parts25 and 26 be in their original tight clamping position with respect tothe web l5 before the wheel .can be completely assembled on the shaft.

Having thus described my invention it will be seen that changes andmodifications may be madetherein by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is:

1. In a hand Wheel for a shaft having a key thereon, a fiat thinwebextending around the shaft, a holding member on the shaft having screwthreads thereon, and a checking member threaded on the screw threads andclamping the web against the holding member, said members having alignedkey slots receiving said key and the latter preventing relative angularmovement of said members.

2. In a handwheel for a shaft having a key thereon, a fiat thin webhaving a hole therein formed with opposite straight edges connected byarcuate edges concentric with the shaft extending around the shaft, aholding member on the shaft, a projection extending from the memberalong the shaft and through the web, said projection having oppositefiat surfaces engaging said straight edges 7 and having rounded surfacesfitting arou'ndisaid arcuate edgesscrew threads on said rounded surfacesof saidprojection, and a checking member threaded on said screw threadsand clamping the web against said holding member, said members havingaligned key slots receiving said key and the latter preventing relativeangular motion of said members.

JOSEPH M. PATRICK.

